Add iOS spring animation objc files

ci/licenses_golden/licenses_flutter

@@ -714,9 +714,11 @@ SOFTWARE.
 
 ====================================================================================================
 LIBRARY: spring_animation
-ORIGIN: ../../../flutter/third_party/spring_animation/Libraries/Animated/animations/SpringAnimation.js + ../../../flutter/third_party/spring_animation/LICENSE
+ORIGIN: ../../../flutter/third_party/spring_animation/spring_animation.h + ../../../flutter/third_party/spring_animation/LICENSE
+ORIGIN: ../../../flutter/third_party/spring_animation/spring_animation.mm + ../../../flutter/third_party/spring_animation/LICENSE
 TYPE: LicenseType.mit
-FILE: ../../../flutter/third_party/spring_animation/Libraries/Animated/animations/SpringAnimation.js
+FILE: ../../../flutter/third_party/spring_animation/spring_animation.h
+FILE: ../../../flutter/third_party/spring_animation/spring_animation.mm
 ----------------------------------------------------------------------------------------------------
 Copyright (c) Meta Platforms, Inc. and affiliates.
 
@@ -791,6 +793,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ====================================================================================================
 LIBRARY: accessibility
 LIBRARY: engine
+LIBRARY: spring_animation
 LIBRARY: tonic
 LIBRARY: txt
 LIBRARY: web_unicode
@@ -3164,6 +3167,7 @@ ORIGIN: ../../../flutter/third_party/accessibility/base/string_utils.cc + ../../
 ORIGIN: ../../../flutter/third_party/accessibility/base/string_utils.h + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/third_party/accessibility/gfx/transform.cc + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/third_party/accessibility/gfx/transform.h + ../../../flutter/LICENSE
+ORIGIN: ../../../flutter/third_party/spring_animation/SpringAnimationTest.mm + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/third_party/tonic/common/build_config.h + ../../../flutter/third_party/tonic/LICENSE
 ORIGIN: ../../../flutter/third_party/tonic/common/log.cc + ../../../flutter/third_party/tonic/LICENSE
 ORIGIN: ../../../flutter/third_party/tonic/common/log.h + ../../../flutter/third_party/tonic/LICENSE
@@ -5668,6 +5672,7 @@ FILE: ../../../flutter/third_party/accessibility/base/string_utils.cc
 FILE: ../../../flutter/third_party/accessibility/base/string_utils.h
 FILE: ../../../flutter/third_party/accessibility/gfx/transform.cc
 FILE: ../../../flutter/third_party/accessibility/gfx/transform.h
+FILE: ../../../flutter/third_party/spring_animation/SpringAnimationTest.mm
 FILE: ../../../flutter/third_party/tonic/common/build_config.h
 FILE: ../../../flutter/third_party/tonic/common/log.cc
 FILE: ../../../flutter/third_party/tonic/common/log.h

shell/platform/darwin/ios/BUILD.gn

@@ -270,6 +270,7 @@ shared_library("ios_test_flutter") {
     "//build/config:symbol_visibility_hidden",
   ]
   sources = [
+    "../../../../third_party/spring_animation/SpringAnimationTest.mm",
     "framework/Source/FlutterAppDelegateTest.mm",
     "framework/Source/FlutterBinaryMessengerRelayTest.mm",
     "framework/Source/FlutterChannelKeyResponderTest.mm",
@@ -301,6 +302,7 @@ shared_library("ios_test_flutter") {
     "//flutter/shell/platform/darwin/common:framework_shared",
     "//flutter/shell/platform/embedder:embedder_as_internal_library",
     "//flutter/shell/platform/embedder:embedder_test_utils",
+    "//flutter/third_party/spring_animation",
     "//flutter/third_party/tonic",
     "//flutter/third_party/txt",
     "//third_party/ocmock:ocmock_shared",

testing/ios/IosUnitTests/IosUnitTests.xcodeproj/project.pbxproj

@@ -73,6 +73,7 @@
 		68B6091227F62F990036AC78 /* VsyncWaiterIosTest.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = VsyncWaiterIosTest.mm; sourceTree = "<group>"; };
 		3DD7D38C27D2B81000DA365C /* FlutterUndoManagerPluginTest.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = FlutterUndoManagerPluginTest.mm; sourceTree = "<group>"; };
         73F12C22288F92FF00AFC3A6 /* FlutterViewControllerTest_mrc.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = FlutterViewControllerTest_mrc.mm; sourceTree = "<group>"; };
+        73E371A42983A373009513F0 /* SpringAnimationTest.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = SpringAnimationTest.mm; path = ../../../../../../third_party/spring_animation/SpringAnimationTest.mm; sourceTree = "<group>"; };
 		F7521D7226BB671E005F15C5 /* libios_test_flutter.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libios_test_flutter.dylib; path = "../../../../out/$(FLUTTER_ENGINE)/libios_test_flutter.dylib"; sourceTree = "<group>"; };
 		F7521D7526BB673E005F15C5 /* libocmock_shared.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libocmock_shared.dylib; path = "../../../../out/$(FLUTTER_ENGINE)/libocmock_shared.dylib"; sourceTree = "<group>"; };
 		F77E081726FA9CE6003E6E4C /* Flutter.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Flutter.framework; path = "../../../../out/$(FLUTTER_ENGINE)/Flutter.framework"; sourceTree = "<group>"; };
@@ -114,6 +115,7 @@
 				0AC2331924BA71D300A85907 /* FlutterPluginAppLifeCycleDelegateTest.mm */,
 				0AC2332124BA71D300A85907 /* FlutterViewControllerTest.mm */,
 				73F12C22288F92FF00AFC3A6 /* FlutterViewControllerTest_mrc.mm */,
+				73E371A42983A373009513F0 /* SpringAnimationTest.mm */,
 			);
 			name = Source;
 			path = ../../../shell/platform/darwin/ios/framework/Source;

third_party/spring_animation/BUILD.gn

@@ -0,0 +1,14 @@
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+if (is_ios) {
+  import("//flutter/common/config.gni")
+  source_set("spring_animation") {
+    sources = [
+      "spring_animation.h",
+      "spring_animation.mm",
+    ]
+    public_configs = [ "//flutter:config" ]
+  }
+}